Work holder



WORK HOLDER Original Filed May 5, 1936 3 Sheets-Shet 1 NEY v June 6, 1939. J, BRENZINGER 2,160,954

WORK HOLDER Original Filed Ma.y 5, 1936 5 Sheets-Sheet 2 ATTORNEY June 9 J. BRENZINGER 2,160,954 7 I WORK HOLDER Original Filed May 5, 1936 3 Sheets-Shed 3 ATTORNEY Patented June 6, 1939 PATENT OFFiCE worm HOLDER Julius Brenzinger, Fail-field, Conn.

Original application May 1936, Serial No. 77,938. Divided and this application May 21,

1937, Serial No. 143,901

1 Claim.

This application is a division of one filedMay 5, 1,936, Ser. No. 77,938 (now Patent No. 2,101,- 530).

It has now become the custom to sell beer in 6 tin cans instead of in bottles as heretofore, and

this has created a new set of problems. It is, of

course, possible to fill the ordinary tin can with beer and to open such can with the ordinary can opener, but such procedure does not add to the 10 esthetic enjoyment of a meal as the appearance of the open tin can is not attractive and the can opener does not harmonize with the flat silver with which the table is set. It would obviously be desirable to have a tin can that is provided with the usual crown-cork so extensively used heretofore in connection with bottles containing beverages or other liquids. Also, bottle openers for use in connection with crown-corks are obtainable in silver mountings that may be placed upon the table without marring the appearance of the latter. It would appear to be easy enough to provide a tin can with a dome-shaped top having a neck designed to receive a crown-cork, but there are practical difficulties in the way which will be 5 understood from the following: After the can is filled with beer it is subjected to a pasteurizing process that raises the pressure within the can to about one hundred pounds to the square inch.

The joint that unites the top and the can body must therefore be exceedingly strong to withstand such pressure, and for this reason it is not feasible to merely solder the top to the can body.

Furthermore, the soldering action heats a portion of the can body and top that extends considerably beyond the point where the soldering occurs and thus renders it impossible to decorate or print the can body over a considerable area adjacent the soldered portion. It is necessary, therefore, to seam the top and body together not only for prac tical considerations but also from the decorative point of view. But this is only one of the difliculties because, in order to force the crown-cork over the lip of the neck of the top, a pressure of five or six hundred pounds is necessary and this has a tendency to collapse the top or to open the seam between the top and body.

The main object and. feature of the invention is to provide means whereby the difiiculties above recited will be overcome, to the end that a joint may be made between the top and body, sufilciently strong to withstand the stresses to which it is incident, which shall at the same time be presentable from a decorative point of view, and in the manufacture of which an excessive amount 55 of tin-plate need not be used. It will be under-v stood, however, that while the problems recited are in connection with beer it is not intended to limit the use of such container to that beverage as the invention is susceptible of being employed inconnection with containers used for a wide variety of purposes.

In the accompanying drawings the invention is disclosed in a now preferred form, in which Fig. 1 is a top plan view of a container produced by a mechanism embodying the invention; 10

Fig. 2 is a view, partly in side elevation and partly in section of the container shown in Fig. 1;

Fig. 3 is a fragmentary view similar to Fig. 2 showing a modified form of container;

Fig. 4 is a sectional View of a workholder, em- 5 bodying the invention, for clamping the work with the parts shown in the position they occupy at the beginning of the seaming operation, and showing also a preferred form of seaming tool associated therewith; and 2 Fig. 5 is a view similar to Fig. 4 but with the parts shown at the end of the seaming operation.

I is a can body of sheet material and 2 indicates the top. The body is provided at one end 25 with an outwardly extending flange 3. The other end of the body has a similar flange 4 but it is unnecessary for present purposes to describe the subsequent seaming operation that unites bottom 5 to the body. The top is provided at its lower 30 end with an upright or dependent stabilizing rim 6 of smaller diameter than that of the inside of ,the body, and from this stabilizing rim extends supporting body I, lower flange 4 resting on a spring-seated plate I2 of said mandrel to limit endwisemovement of the body. Said mandrel is provided with a ledge l3 to engage, within the boundary of the body and substantially at the level of the flange of the body, one surface of flange 'i of the top. H indicates a chuck to cooperate with the mandrel and having a clamping portion 15 that engages the other surface of flange 1 of the top. In addition, the mandrel and chuck are provided with complementary walls It and I! that snugly engage and sustain stabilizing rim 6 of the top. The mandrel and chuck are movable lengthwise one with respect to the other and, while apart, body I is slipped over the mandrel and top 2 is placed in position on the mandrel and on flange 3 of the body. The mandrel and the chuck are then brought together thereby firmly clamping the body and top. One or more seaming tools are now brought into play and by preference a rotating and lengthwise movable helical seaming tool I8 is utilized to perform the seaming operation that unites flanges 3 and 1 into a seam l9. It is unnecessary to describe the seaming tool in detail except to say that the con struction shown in United States Letters Patent Nos. 1,390,490 and 1,612,564 may be utilized. The resulting container is characterized by a top having at its lower end a substantially vertical stabilizing rim 6 of a diameter smaller than the inside diameter of the body and located in a plane above the body, a horizontally extending flange 1 extending from said rim and being seamed to the corresponding flange 3 of the body. It will be noted that flange 1 does not form a gutter as it is not depressed below the upper end of the body. If it were, such gutter would also bring flange 6 of the top below the upper end of the body, and any downward pressure exerted in applying the crown-cork to the neck of the top would have a tendency to open seam Hi. This objectionable feature is avoided by having stabilizing rim 6 above the upper end of the body. Also surface 1, instead of being a gutter that would retain liquids and dust, is a flat surface that tends to shed liquids and particles of matter.

In Fig. 3 is shown a modification of the container in which body la is provided with. a flange 3a similar to that described above. Top 201. is likewise provided with a stabilizing rim to and a flange 10. as before, but the dome-shaped portion 8a is curved instead of being straight.

I claim:

A workholder, for supporting a body having at one end an outwardly extending flange, and a superposed top having a dependent rim of smaller diameter than that of the body and having an outwardly extending flange that projects from said rim and is of a diameter greater than that of the outwardly extending flange of the body, comprising: a mandrel to sustain the body and limit its endwise movement, said mandrel having a ledge to engage, within the boundary of the body and substantially at the level of the flange of the body, one surface of the flange of the top, and having also an upstanding wall to engage the inner surface of said rim; and a chuck to cooperate with said mandrel, said chuck having a dependent wall to engage the outer surface of said rim, and having also a clamping portion below said wall to engage the outwardly extending flange of the top at the other surface thereof.

JULIUS BRENZINGER. 

